Mouthpiece of a smoking article



FIG. 1 is a perspective view of a mouthpiece of a smoking article showing our new design.

FIG. 2 is a side elevational view thereof; and,

FIG. 3 is a right end elevational view thereof.

The broken lines depict portions of the mouthpiece of a smoking article and form no part of the claimed design. 

CLAIM The ornamental design for a mouthpiece of a smoking article, as shown and described. 